#include <stdio.h>
int main(void)
{
    char char_to_input;
    char_to_input = getchar();
    printf("The character is %c\n", char_to_input);
    if((char_to_input >= '0') && (char_to_input <= '9'))/*判断条件，这个字符在'0'~‘9’之间的某一个字符就是数字*/
    {
        printf("The character is a number\n");
        printf("it is %c\n",char_to_input);    
    }
       // printf("The character is a number, it is %c\n", char_to_input);
       // printf("The character is a number\n");
       // printf("it is %c\n",char_to_input);

    return 0;
}